Observation of Exotic 𝐽/𝜓⁢𝜙 Resonant Structure in Diffractive Processes in Proton-Proton Collisions

LHCb Collaboration; Daniel Johnson; Cristina Lazzeroni; Marcus Madurai; Niladribihari Sahoo; Mark Slater; Paul Swallow; Daniel Thompson; Nigel Watson

doi:10.1103/PhysRevLett.134.031902

Observation of Exotic 𝐽/𝜓⁢𝜙 Resonant Structure in Diffractive Processes in Proton-Proton Collisions

LHCb Collaboration
, Daniel Johnson
, Cristina Lazzeroni
, Marcus Madurai
, Niladribihari Sahoo
, Mark Slater
, Paul Swallow
, Daniel Thompson
, Nigel Watson

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

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Abstract

The first study of 𝐽/𝜓⁢𝜙 production in diffractive processes in proton-proton collisions is presented. The study is based on an LHCb dataset recorded at center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5 fb⁻¹. The data disfavor a nonresonant 𝐽/𝜓⁢𝜙 production but are consistent with a resonant model including several resonant states observed previously only in 𝐵⁺→𝐽/𝜓⁢𝜙⁢𝐾⁺ decays. The _𝜒𝑐⁢0⁡(4500) state is observed with a significance over 6⁢𝜎 and the _𝜒𝑐⁢1⁡(4274) is confirmed with a significance of more than 4⁢𝜎.

Original language	English
Article number	031902
Journal	Physical Review Letters
Volume	134
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevLett.134.031902
Publication status	Published - 24 Jan 2025

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title = "Observation of Exotic 𝐽/𝜓⁢𝜙 Resonant Structure in Diffractive Processes in Proton-Proton Collisions",

abstract = "The first study of 𝐽/𝜓⁢𝜙 production in diffractive processes in proton-proton collisions is presented. The study is based on an LHCb dataset recorded at center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5 fb−1. The data disfavor a nonresonant 𝐽/𝜓⁢𝜙 production but are consistent with a resonant model including several resonant states observed previously only in 𝐵+→𝐽/𝜓⁢𝜙⁢𝐾+ decays. The 𝜒𝑐⁢0⁡(4500) state is observed with a significance over 6⁢𝜎 and the 𝜒𝑐⁢1⁡(4274) is confirmed with a significance of more than 4⁢𝜎.",

author = "\{LHCb Collaboration\} and Daniel Johnson and Cristina Lazzeroni and Marcus Madurai and Niladribihari Sahoo and Mark Slater and Paul Swallow and Daniel Thompson and Nigel Watson",

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doi = "10.1103/PhysRevLett.134.031902",

language = "English",

volume = "134",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society (APS)",

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T1 - Observation of Exotic 𝐽/𝜓⁢𝜙 Resonant Structure in Diffractive Processes in Proton-Proton Collisions

AU - LHCb Collaboration

AU - Johnson, Daniel

AU - Lazzeroni, Cristina

AU - Madurai, Marcus

AU - Sahoo, Niladribihari

AU - Slater, Mark

AU - Swallow, Paul

AU - Thompson, Daniel

AU - Watson, Nigel

PY - 2025/1/24

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N2 - The first study of 𝐽/𝜓⁢𝜙 production in diffractive processes in proton-proton collisions is presented. The study is based on an LHCb dataset recorded at center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5 fb−1. The data disfavor a nonresonant 𝐽/𝜓⁢𝜙 production but are consistent with a resonant model including several resonant states observed previously only in 𝐵+→𝐽/𝜓⁢𝜙⁢𝐾+ decays. The 𝜒𝑐⁢0⁡(4500) state is observed with a significance over 6⁢𝜎 and the 𝜒𝑐⁢1⁡(4274) is confirmed with a significance of more than 4⁢𝜎.

AB - The first study of 𝐽/𝜓⁢𝜙 production in diffractive processes in proton-proton collisions is presented. The study is based on an LHCb dataset recorded at center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5 fb−1. The data disfavor a nonresonant 𝐽/𝜓⁢𝜙 production but are consistent with a resonant model including several resonant states observed previously only in 𝐵+→𝐽/𝜓⁢𝜙⁢𝐾+ decays. The 𝜒𝑐⁢0⁡(4500) state is observed with a significance over 6⁢𝜎 and the 𝜒𝑐⁢1⁡(4274) is confirmed with a significance of more than 4⁢𝜎.

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DO - 10.1103/PhysRevLett.134.031902

M3 - Article

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ER -

Observation of Exotic 𝐽/𝜓⁢𝜙 Resonant Structure in Diffractive Processes in Proton-Proton Collisions

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